I've just got the most excellent Ubercart ecommerce system to work with Paypal for paying and then auto-downloading digital media (eBook).

I thought I would jot down the process, as a memory jogger for me and if it helps anybody out there in inter-web-cyber-highway-net-land then it's worth the wasted minutes of typing   ;)

So lets start with the basics, obviously replace http://the-pc-workshop.com with your own website name... duh!

Ubercart is a shopping cart and e-commerce suite built on top of the leading open source CMS, Drupal. Ubercart is totally integrated with Drupal's major core and contributed systems, providing you with a shopping cart on top of your normal community or company website.

Drupal Content Management System

The fact that this website is being driven by Drupal is a testament to this amazing open source content management system It's ease of use, simple upgrade patth and fantastic range of features is quite astounading.